Patents Assigned to E
-
Patent number: 4908336Abstract: A flexible circuit (1) provided with at least one connector for connecting an electrical component (25) to corresponding conductors of the flexible circuit. The connector consists of two parallel contact strips (5) from insulating flexible material, which are attached to the flexible circuit. The surfaces of the contact strips (5) facing each other have contact surfaces (6, 7) which are electrically connected to the corresponding conductors (3, 2) of the flexible circuit (1). The connector further consists of a positioning block (15) from insulating material, which is provided with holes into which the connecting pins (21, 22) of the electrical component (25) can be inserted. Grooves (16, 17) in which the contact strips lie are provided in the side faces, adjacent to the holes, of the positioning block and have a depth which is greater than the minimum distance between the wall of a hole and the adjacent side face of the positioning block.Type: GrantFiled: March 30, 1989Date of Patent: March 13, 1990Assignee: E. I. Du Pont de Nemours & Co.Inventor: Bob Mouissie
-
Patent number: 4908397Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-94% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups;(c) 1-40% by weight, based on the weight of the binder, of a self-stabilized dispersed resin; andthe composition contains about 0.1-5% by weight; based on the weight of the binder, of a catalyst.Type: GrantFiled: June 27, 1988Date of Patent: March 13, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert J. Barsotti, Patrick H. Corcoran
-
Patent number: 4908628Abstract: A radar apparatus transmits a pulse and receives a corresponding return within the duration of the transmitted pulse. The returned pulse and a proportion of the energy of the transmitted pulse are mixed in a mixer to produce a demodulated pulse of duration equal to the overlap in time of the transmitted and received pulses. In order to render the apparatus insensitive to close targets a video gate prevents the portion of the demodulated pulse corresponding to e.g. 0 to 1/4 full range passing to a processing circuit. The processing circuit forms the ratio of the amplitudes of two frequency components of the spectrum of the demodulated pulse as a measure of range (FIG. 3) or forms the mean amplitude of the demodulated pulse weighted according to a weighting function (FIG. 4).Type: GrantFiled: July 7, 1981Date of Patent: March 13, 1990Assignee: E M I LimitedInventors: Ernest R. Cashen, Peter A. R. Holder
-
Patent number: 4908197Abstract: Methods are described for preparing aluminum nitride of controllable morphology for ceramic and heat conduction applications. The methods comprise forming spherical particles or flakes of an intermediate, RA1NH, followed by heating the spheres or flakes of RA1NH at elevated temperatures to produce high purity aluminum nitride of corresponding morphology. Spheres of RA1NH are formed by (i) freezing a suspension of RA1NH in a liquid medium and thawing, by (ii) aging the suspension, or by (iii) dissolving RA1NH in a liquid medium and precipitating it. Flakes are formed by freezing a suspension of RAINH in a liquid medium and removing frozen medium from the frozen suspension.Type: GrantFiled: April 7, 1989Date of Patent: March 13, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: John D. Bolt, Walter Mahler, Frederick N. Tebbe, Robert J. Young, Jr.
-
Patent number: 4907864Abstract: Gradient optical density transmissive light directing devices (24, 26, 28, 30) and fabrication thereof are disclosed herein. Example of such devices include concentrators, lenses and compound lenses. The present invention teaches a process for the fabrication of glass light transmitting devices having a chosen gradient in index of refraction either bidirectionally (radially and longitudinally relative to an optical axis) or in three dimensions. The present invention further describes the design of several interesting optical devices by particular choices of the gradient in the index of refraction thereof. Such articles have numerous uses in the optics, optical fiber and solar technology industries for the purposes of designing compound lens systems using a single, integral lens, coupling light into fibers and for concentrating and directing light from a source having a significant angular variation to an energy collecting and/or conversion devices such as a photovoltaic cell, to name but a few applications.Type: GrantFiled: June 17, 1988Date of Patent: March 13, 1990Assignee: John E. Fetzer FoundationInventors: James J. Hagerty, Leslie A. Danziger
-
Patent number: 4908056Abstract: This invention relates to novel heterocyclic carbonyl sulfonamides which are particularly useful as agricultural chemicals.Type: GrantFiled: February 17, 1989Date of Patent: March 13, 1990Assignee: E. I. Du Pont De Nemours and CompanyInventor: Chi-Ping Tseng
-
Patent number: 4908296Abstract: A photosensitive ceramic coating composition which is fireable in a substantially nonoxidizing atmosphere comprising an admixture of:(a) finely divided particles of ceramic solids,(b) finely divided particles of an inorganic binder dispersed in an organic medium comprising(c) an organic polymeric binder, and(d) a photoinitiation system, dissolved in(e) photohardenable monomer, and(f) an organic mediumwherein the improvement comprises an organic polymeric binder containing a copolymer or interpolymer of a C.sub.1 -C.sub.10 alkyl acrylate, C.sub.1 -C.sub.10 methacrylate, styrene, and an ethylenically unsaturated carboxylic acid, wherein a moiety in the binder derived from the unsaturated carboxylic acid comprises from 5 to less than 15 weight percent of the polymer and wherein the binder has a molecular weight not greater than 100,000 and wherein the composition upon imagewise exposure to actinic radiation is developable in an organic solvent-water mixture.Type: GrantFiled: May 31, 1988Date of Patent: March 13, 1990Assignee: E. I. Du Pont De Nemours and CompanyInventors: William J. Nebe, James J. Osborne
-
Patent number: 4908461Abstract: Process for preparing dioxoles by dechlorinating 4,5-dichlorodioxolanes with selected molar quantities of a lithium aluminum hydride/titanium (III or IV) chloride reagent at 20.degree.-35.degree. C.Type: GrantFiled: November 28, 1988Date of Patent: March 13, 1990Assignee: E. I. Du Pont De Nemours and CompanyInventor: Ming-Hong Hung
-
Patent number: 4908260Abstract: A flame resistant copolyetherester elastomer film composition comprising(a) 60-85 weight percent of a hydrophilic copolyetherester elastomer film having a thickness of 0.3-1.6 mils, a water vapor transmission rate of at least 7,000 gm.mil/m.sup.2 /24 hours and an elongation of at least 600% with said hydrophilic elastomer film consisting essentially of a multiplicity of long chain ester units and short chain ester units joined head-to-tail through ester linkages wherein copolyetherester elastomer contains about 25-80 weight percent short chain ester units, and(b) 15-40 weight percent of a flame retardant component comprised of 37.Type: GrantFiled: September 7, 1988Date of Patent: March 13, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Harshad R. Dodia, George J. Ostapchenko
-
Patent number: 4907737Abstract: Electronic control system for a gas-fired/hot air furnace includes a primary control unit which controls the flow of fuel to the furnace. The furnace has heating and cooling space thermostats and a comfort fan to supply heated or cooled air to the space being monitored by the thermostats and an induced draft blower which supplies combustion air into the furnace for heating. A first switch and associated relay drive selectively energizes the comfort fan for low speed heating operation and a second relay switch and associated relay drive selectively energizes the comfort fan for high speed cooling operation. Actuation of the heating thermostat energizes a third switch and associated relay drive which energizes the induced draft blower. A high temperature thermostat located to sense excessive furnace temperatures is also connected to actuate the third relay to energize the induced draft blower in an excessive temperature condition.Type: GrantFiled: March 30, 1989Date of Patent: March 13, 1990Assignee: R. E. Phelon Company, Inc.Inventor: Roger W. Williams, Jr.
-
Patent number: 4906520Abstract: A fabric, useful as a primary carpet backing, woven in both the warp and weft directions from filmy elements in the form of longitudinally-oriented, splittable ribbons formed from a blend of a major amount of polyester and a minor amount of a polyolefin. The ribbons split longitudinally when punctured by a tufting needle, thus providing for a more secure grip on the tufted carpet yarn than that given by conventional polyester backings. The use of polyester as a principal component overcomes certain drawbacks of polypropylene backings. Alternative processes for making these fabrics, each involving a heat-treating step at a temperature of at least 150.degree. F. (66.degree. C.) for a sufficient period of time to render the ribbons splittable, are also disclosed.Type: GrantFiled: May 2, 1988Date of Patent: March 6, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Vijayendra Kumar
-
Patent number: 4906713Abstract: Acrylic "Ladder" polymers and their preparation from difunctional monomers and difunctional initiators.Type: GrantFiled: January 31, 1969Date of Patent: March 6, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Dotsevi Y. Sogah
-
Patent number: 4906503Abstract: A banner including a bonded nonwoven polyolefin film-fibril sheet having front and back surfaces and having two side edges intersecting top and bottom edges to define four corners. The side edges are generally linear and are folded-over onto the back surface of the sheet and secured with double-faced adhesive tape to form a laminated edgefold with the double-faced adhesive tape sandwiched between two layers of the sheet. The front surface of the sheet has at least a first coating of surface-sealing polymer and means are provided adjacent each corner for attaching cords to the edgefold for hanging the banner.Type: GrantFiled: August 30, 1988Date of Patent: March 6, 1990Assignee: E. I. DuPont de Nemours and CompanyInventors: Danilo O. De La Cruz, Harold M. McCabe, Jeffrey P. Shawcross
-
Patent number: 4906177Abstract: Electronic control system for an oil burner has a primary direct current power source controlled by a thermostat and a secondary direct current power source independent of the thermostat. A first relay is in circuit with the oil burner motor to energize the same and a second relay is in series with the first and with an alternating voltage source for energizing the ignitor of the furnace. An electronic circuit controls the first relay switch and includes a pair of silicon controlled rectifiers (SCR's) connected in series for energizing the first relay. A second electronic circuit includes a pair of interconnected NPN transistors for controlling the operation of the second relay switch. The first NPN transistor is conductive when the second relay switch is energized and the second NPN transistor is connected to the first to turn "OFF" the same in response to flame being sensed in the furnace.Type: GrantFiled: January 3, 1989Date of Patent: March 6, 1990Assignee: R. E. Phelon Company, Inc.Inventors: Richard D. Newberry, Roger W. Williams, Jr.
-
Patent number: 4905420Abstract: In order to improve a grinder comprising a grinding tool which is oscillatingly driven through a small pivot angle about a pivot axis fixed on the grinder and which has a grinding surface with at least one corner region, with at least one suction channel extending throughout the grinding tool from an aspirating port to an exhaust port located on a side facing away from the grinding surface, so as to obtain an effective, reliable and, in particular, subsequently attachable dust exhaust system which is designed as simply as possible and does not impair handling of the grinder, it is suggested that the exhaust port be arranged outside of the corner region and that an exhaust hood which can be immovably fixed on the grinder be provided so as to cover the exhaust port in all pivoted positions and allow the corner region of the grinding tool to protrude in an uncovered manner.Type: GrantFiled: July 22, 1988Date of Patent: March 6, 1990Assignee: C. & E. Fein GmbH & Co.Inventors: Gert Flachenecker, Gustav Schuhmacher, Fritz Gramm, Guenther Kloss
-
Patent number: 4906288Abstract: Certain N-[(pyridyl or pyrimidyl)aminocarbonyl]arylsulfonamides, such as the compound methyl 2-[[N-(3-cyano-4,6-dimethylpyridin-2-yl)aminocarbonyl]aminosulfonyl]benzoa te, possess herbicidal activity.Type: GrantFiled: November 4, 1987Date of Patent: March 6, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Caleb W. Holyoke, Jr., Chi-Ping Tseng, William T. Zimmerman
-
Patent number: 4906939Abstract: Test fixtures, each being adapted to receive a capacitor, are connected through a relay network to a time variable high voltage source. Predetermined relays are energized in a predetermined sequence to connect a given capacitor to the source. A high voltage signal having a predetermined waveform is applied to the capacitor associated with an energized relay. When the current through the given capacitor exceeds a threshold, the voltage value then being applied to the capacitor determines the breakdown voltage of the capacitor.Type: GrantFiled: December 16, 1988Date of Patent: March 6, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Paul J. Berrigan, Michael J. Brennan, Jr.
-
Patent number: 4906667Abstract: Phenyl hydroxamic acids are disclosed having the general formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein X is NR, oxygen, sulfur, ##STR2## or a single bond, and Y is NR, oxygen, sulfur, ##STR3## or a single bond, where R can be hydrogen or lower alkyl, g can be 1 or 2, and with the proviso that at least one of X and Y is other than a single bond; Z is aryl, aralkyl or cycloalkyl; R.sub.1 is hydrogen, substituted or unsubstituted lower alkyl, cycloalkyl, lower alkenyl or aryl; R.sub.2 is hydrogen, lower alkyl, aroyl or acyl; m is 0 to 4 carbon atoms; and, n is 0 to 4 carbon atoms further providing that if one of X or Y is oxygen, the other of X or Y must be oxygen and further that when X and Y are oxygen Z cannot be aralalkyl.These new compounds have been found to be inhibitors or arachidonic acid 5-lipoxygenase and are therefore useful as antiallergy agents and antipsoriatics.Type: GrantFiled: May 23, 1988Date of Patent: March 6, 1990Assignee: E. R. Squibb & Sons, Inc.Inventors: Ravi K. Varma, Eric M. Gordon, Martin F. Haslanger
-
Patent number: 4907278Abstract: This connected-speech recognition system uses a two-level hierarchical system, in which the higher-level (master) processor and one or more lower-level units (slaves) process, respectively, the most probably word sequence within a permitted grammar network, and the likelihood of individual words with the grammar network. The lower-level processing performs dynamic programming involving vector and matrix calculation and comparison, and processing speed is improved by an integrated processing unit which has simultaneous access to the external data memory as well as to a high-speed internal microinstruction ROM. One of the aforementioned units can also provide for performing an additional internal test function. The structure features two internal data buses and internal memories for more commonly used data and addresses, for enabling high-speed microinstruction performance and external memory access.Type: GrantFiled: June 27, 1988Date of Patent: March 6, 1990Assignee: Presidenza Dei Consiglio Dei Ministri Del Ministro Per Il Coordinamento Delle Iniziative Per La Ricerca Scientifica E Tecnologica, Dello Stato ItalianoInventors: Riccardo Cecinati, Alberto Ciaramella, Luigi Licciardi, Maurizio Paolini, Robert Tasso, Giovanni Venuti
-
Patent number: D306528Type: GrantFiled: February 24, 1987Date of Patent: March 13, 1990Assignee: E and L Plus, Inc.Inventor: Glenn E. Worley